Commit a52d4f65 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring/fs: remove sqe->rw_flags checking from LINKAT 



This is unionized with the actual link flags, so they can of course be
set and they will be evaluated further down. If not we fail any LINKAT
that has to set option flags.

Fixes: cf30da90 ("io_uring: add support for IORING_OP_LINKAT")
Cc: stable@vger.kernel.org
Reported-by: default avatarThomas Leonard <talex5@gmail.com>
Link: https://github.com/axboe/liburing/issues/955


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent c21a8027

io_uring/fs.c

+1 −1
Original line number Diff line number Diff line
@@ -243,7 +243,7 @@ int io_linkat_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) 
	struct io_link *lnk = io_kiocb_to_cmd(req, struct io_link);

	const char __user *oldf, *newf;



	if (sqe->rw_flags || sqe->buf_index || sqe->splice_fd_in)

	if (sqe->buf_index || sqe->splice_fd_in)

		return -EINVAL;

	if (unlikely(req->flags & REQ_F_FIXED_FILE))

		return -EBADF;